JPS5923479Y2 - Threshing machine safety cover - Google Patents

Description

[Detailed explanation of the invention] Conventional safety covers covering the transmission parts of threshing machines were designed to cover only the sides and leave the bottom open so that straw and other debris could fall out from the bottom of the machine. It was extremely dangerous to touch the internal pulleys and belts.

The present invention aims to provide a safety cover for a threshing machine that is extremely safe as it is not possible to insert one's hand from below the safety cover, and that can automatically remove straw, mud, etc. that accumulates inside the safety cover. The lower transmission part of the threshing part is covered with a cover, and a bottom plate is rotatably supported between the lower part of the cover and the machine wall, and the bottom plate has a mechanism that allows the threshing part to return to a substantially horizontal position. The present invention is characterized in that it is provided with a bullet which urges the bullet to move and a stopper which receives and stops the bottom plate against the bullet.

The embodiment shown in the drawings will be described in detail below. 1 is a feed chain 2 stretched along the handling port of a threshing machine mounted on a combine harvester, a counter pulley 3, a pulley 4 of a suction fan mounted on a shaft in a dust removal chamber, and the like. This is an upper cover that covers the belt 5, etc. suspended between the two.The upper part is close to the chain plate of the feed chain 2, and the lower part has an opening a, so that straw and dirt that has fallen from the feed chain 2 can be removed. etc., fall outward from the opening a and escape.

6 is a pulley 8 of a blower fan provided below the supply lower;
Pulley 9 with the first transfer spiral, pulley 1 with the second transfer spiral
0, the tension pulleys 11, 12, 13, and the bells hung thereon) 14, 15, etc., the lower cover is provided with a number of intake windows 16 on the side of the blower fan from the middle part thereof, A ventilation hole 18 is provided on the dust exhaust port 17 side.

A bottom plate 20 is pivoted by a support shaft 21 between the lower part of the lower cover 6 and the machine wall 19 extending from below the pulley 8 of the blower fan to below the pulley 9 of the most transfer spiral, so as to be able to tilt vertically. A spring 22 is attached to the bottom plate 20 to urge it to maintain a substantially horizontal position until a certain amount of straw etc. has accumulated thereon, and a stopper 23 protruding from the base of the bottom plate 20 is attached to the bottom plate 20. The bottom plate 20 is kept in a substantially horizontal position by coming into contact with the bent portion at the lower part of the machine wall 19.

Although the bottom plate 20 does not extend below the pulley 10 of the second transfer spiral, a hole is provided so that the vertical portion of the bell (14.15) passes through the upper slope of the lower cover 6. Since a lot of straw and other debris falls from the end of the feed chain 2, it is easy for straw and other debris to enter.Furthermore, the second spiral boot IJ-10 is located at a relatively high place and is not very dangerous, so the bottom plate 20 was omitted.

In addition, since a vertical partition plate 24 is provided between the intake window 16 and the ventilation hole 18 of the lower cover 6, straw debris falling into the inner side of the lower cover 6 from the portion through which the bells H4 and 15 pass can be removed. etc. are prevented from flowing into the blower fan side, and straw waste is prevented from being sucked in from the suction port of the blower fan.

As mentioned above, the present invention covers the lower transmission part of the threshing part with a cover, and the bottom plate is rotatably supported between the lower part of the cover and the machine wall, and the bottom plate has a substantially horizontal position. Since we have attached a bullet that urges the machine to return to its position and a stopper that holds the bottom plate against the bullet, the bottom plate at the bottom of the cover that covers the transmission part cannot be opened even if it is pushed from below. Furthermore, once a certain amount of straw waste has accumulated on the bottom plate, its own weight will cause the bottom plate to rotate downward against the bullet and be automatically ejected. etc. can intervene between the belt and the cover to prevent it from catching fire due to the frictional heat of the belt.

Additionally, when a threshing machine is mounted on a combine harvester, the part with the feed chain and cover is usually on the uncut land side, and the sugar part of the upright culm often enters from the bottom of the cover and is torn off by the belt, but the bottom plate is Since the space between the cover and the machine wall is closed, such a phenomenon does not occur at all, and it is possible to prevent grain shedding and also prevent the shell culm from wrapping around the belt.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which FIG. 1 is a side view of a threshing machine, FIG. 2 is a sectional view taken along line AA in FIG. 1, and FIG. 3 is a sectional view taken along line BB in FIG. 1...Top cover, 6...Bottom cover, 8,9゜10...Pulley, 11.12.1
3...Belt, 16...Intake window, 20
...Bottom plate, 24...Partition plate.

Claims (1)

[Scope of utility model registration request] The lower transmission part of the threshing part is covered with a cover, and a bottom plate is rotatably supported between the lower part of the cover and the machine wall, and the bottom plate is biased so that it returns to a substantially horizontal position. A safety cover for a threshing machine, characterized in that it is equipped with a bullet device that protects the grain, and a stopper that catches and stops a bottom plate against the bullet device.